Eclipse optical refractometer

Recognisable & robust

The Eclipse refractometer has become recognised as one of the world’s most reliable and robust optical refractometers on the market today. Manufactured in the UK using the latest techniques, Eclipse refractometers feature a bright field of view, a unique sample “dribble feed” and are sealed against moisture ingress.

Select your scale

A selection of scale types covering a wide range of common applications is available from within the Eclipse range as well as the unique Low Volume Brix Models that are favoured by zoologists and entomologists for having the capability of measuring samples of less than 1-microlitre such as nectar.

Manufactured in the UK

The Eclipse refractometer is a professional instrument at a competitive price. It has been designed to offer great results whether you're new to measuring refractive index or an experienced user.

  • Clear “easy-to-read” scales
  • Smooth eyepiece adjustment
  • Calibration adjustment
  • Well balanced in the hand
  • Durable rubber grip
  • Replaceable prism flap
  • IP65 water resistant

Supplied with Certificate of Calibration

All Eclipse refractometers are serial numbered and come supplied with a Manufacturer's Certificate of Calibration at no additional charge. This ensures that all our instruments are traceable to NIST and ICUMSA standards.

Click here for an example Certificate of Calibration.

Looking for an even simpler way to measure? Take a look at the OPTi digital handheld refractometer for readings at the touch of a button.